TCP completes a threeway handshake before exchanging data In

TCP completes a three-way handshake before exchanging data. In order, what are the steps?

A. ACK, SYN/ACK, SYN

B. ACK, SYN, SYN/ACK

C. SYN/ACK, ACK, SYN

D. SYN, SYN/ACK, ACK

Solution

D is correct. The three-way handshake begins with a synchronization packet (SYN), which is then acknowledged (SYN/ACK). The last step is an acknowledgment of the sequence numbers (ACK).

A, B, and C are incorrect. The steps are out of order.